Washer for sand-blast apparatus.



- PATENTED JAN. 27, 1903. A. G. WARREN. WASHER FOR SAND BLAST APPARATUS.

APPLICATION FILED MAR. 30, 1901.

2 SHEETS-3331 1.

H0 MODEL.

n G F INVENTOR.

WITNESSES.

PATENTBD JAN. 27,1903.

A. G. WARREN.

WASHER FOR SAN'D BLAST APPARATUS.

APPLICATION FILED MAR. 30, 1901.

2 SHEETS-SHEET 2.

10 MODEL...

INVENTOR A WITNESSES ilnrrt n ATENT FFICE.

AMBROSE G. IVARREN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE-HALFTO J. WV. PAXSON COMPANY, OF PHILADELPHIA, PENNSYL- VANIA, ACORPORATION.

WASHER FOR SAND-BLAST APPARATUS.

SPECIFICATION forming part of Letters Patent N 0. 719,395, dated January27, 1903.

Application filed March 30,1901. Serial No. 53.665. (N0 model.)

To all whom it may concern:

Be it known that I, AMBROSE GTWARREN, a citizen of the UnitedStates,residi ng at theoity of Philadelphia, State of Pennsylvania, haveinvented certain new and useful Improvements in Washers for Sand-BlastApparatus, of which the following is a full, clear, and exactdescription, reference being bad to the accompanying drawings, forming apart of this specification.

My invention relates to devices for separating dust from air, commonlycalled washers, when used in connection with sand-blast apparatus, forwhich purpose my improved device is particularly applicable.

The invention has for its object to provide a device in which the airladen with dust and dirt and which is introduced therein under pressure,impart ng to it a considerable velocity, is discharged directly into abody of water contained in the device by passages directly in line withthe inlet, in one of which passages deflecting means are provided, op-

erating to convey the light particles of dust and the air with which itis admixed into the same body of water, but at a different point andimmediately beneath a perforated plate in order that the water at thatpoint shall be sprayed, and thus washing the dust from the air, allowthe dust to descend into the body of water and the cleansed air to passupward through the perforated plate and be discharged or drawn off bysuction devices through discharge-outlets in or near the top of thedevice.

My invention consists of combined mechanisms hereinafter describedperforming these functions and accomplishing these results.

In the accompanying drawings, illustrating the same, Figure 1 is a frontelevation of my improved washer. Fig. 2 is a plan view of the top ofsame, showing in dotted lines the inner perforated deflecting-plates,thepartitionchamber, and means to support the latter within the casing.Fig. 3 is a horizontal section on the line 3 t of Fig. 1. Fig. 4isavertical section of the whole device shown in Fig. 1, taken on theline 1 2 of Fig. 2; and Fig. 5 is also a vertical section of the same ina plane at right angles to that given in Fig. 4. Fig. 6 is a detailsectional view of the plate h.

The device consists of a casing M, preferably cylindrical, and it issupplied with handholes L L to give access thereto, and these are closedby a removable cover L of any suitable and ordinary construction, theeasing being usually made of sheet metal. A

' cast-metal frame-A is fitted to the casing at or near the bottom andcarries a door A for the removal of mud and dirt, and a blow-port B forthe discharge of muddy water. In the side of the casing above thedoor-frame A is provided another cast-metal frame N, providing thereintwo ports on n, the former for supplying water to the body of the casingand the latter an overflow-port. The'top cover 0 of the casing'isprovided with two openings O D, preferably circular, one of whichsupports a tubular inlet for the dust-laden air to be cleaned, and theother supports a tubular outlet for the discharge of the cleansed air.They are alike, and either can be used for either purpose. Whichever isselected (depending upon the particular circumstances of factorylocation and use) the one employed as the inlet is fitted with a tube orpipe S, which extends downward into the casing and is soldered air-tightto and slightly into the partition-chamber E, care being taken to makeit somewhat smaller in diameter than the latter, though not smaller indiameter than the distance between the vertical sides of thedeflecting-plates it, hereinafter described.

The partition-chamber E is composed of two vertically-arranged fiatplates 6 and 6 extending from side to side of the casing, and through anopening in the top a of the same is passed the tube or pipe S. The edgesof the partition-chamber Walls 6 and e rest upon two perforated plates'h h, which in turn rest upon two cross-supports g g, extending fromside to side of the casing. In Fig. 3, showing a plan view of thepartition-chamber E, two openings e and e are shown therein. One only isnecessary, and one only can be used. For the reason heretofore statedwith respect to openings 0 D in the casing-namely, the

arrangement and location of the device in the factory-it is found inpractice more convenient to supply duplicate openings 8 and e in saidpartition-chamber in order, for example, that if opening D of the casingis employed as the inlet and opening 0 for the discharge thecorresponding opening 6 of the partitionchamber in vertical linetherewith is employed, the other opening 6 being temporarily closed witha suitable sealing-cap.

The operation of the device is as follows: Air laden with dust and dirtproceeding from a sand-blast room or apparatus, for example, and movingunder some pressure is admitted to the device through the inlet 0 or Din the casing, the stones or heavy dirt will be discharged directly intothe water passing thereto in a vertical line, passing downward betweenthe defiecting-plates t 25, while a large portion of the volume of airadmixed with lighter dust particles is driven and, guided by theinclined edges k of the deflecting-plates, is led to the water in thespace between the deflecting-plates t t and the walls of the partitionchamber E, striking the water and spraying it. The water is kept at alevel indicated by the line W above the lower edge of thedeflecting-plates and below the perforated plate. The effect of thespraying is a washing eifect, and the cleansed air passes upward throughthe perforated plate or screen 71 to the upper portion of the casing,from whence it is drawn off by any suitable suction device througheither opening 0 or D, whichever is employed as the discharge-opening.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. An apparatus for separating dust from air, consisting of a suitableclosed casing having air inlet and discharge openings at or near the topthereof, laterally-disposed partitionwalls 6 6 with a cover-plate eforming a central chamber into which dust-laden air is conveyed, atubular inlet-pipe S forming a condnit or passage-way between theair-inlet and said partition-chamber, a laterally-arranged perforatedplate at the base of each partitionwall, and vertically arrangeddeflectingplates within said chamber, extending below the perforatedplates; substantially'as de-.

scribed.

2. An apparatus for separating dust from air, consisting of a suitableclosed casing adapted to contain a body of water, having interchangeableinlet and discharge openings O D at or near its top, interiorpartition-walls e e maintained in said casing and a connecting topcover-plate e therefor, forming a central chamber with an open base intowhich dust-laden air is conveyed, a tubular passageway S between theair-inlet and said dustchamber, a laterally-arranged screen in thecasing surrounding the dust-chamber at or near its base, and means todeflect the dustladen air toward the vertical walls of the dust-chamberand deliver it to the water at a point below the screen.

3. An apparatus for separating dust from air consisting of thecombination with a closed casing adapted to contain a body of waterhaving air inlet and discharge openings, a centrally-arranged partition-ehamber within the same, direct tubular connection between saidinlet-opening in the casing and the partition-chamber and extending intothe latter, oppositely-disposed deflecting-plates suitably maintainedwithin the casing, extending into the chamber in one direction and belowthe water-line in the other direction,

and laterally-arranged perforated plates or screens at the base of thevertical walls of the partition-chamber; substantially as described.

In testimony whereof I have hereunto affixed my signature this 2d day ofMarch, A. D.

AMBROSE G. WARREN.

Witnesses:

ANDREW V. GROUPE, H. T. FEN'roN.

